{
  "manageEntity": {
    "action": "Update",
    "entityId": "784627180",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1c15f342cdeeaf248a4036509a75d32856f50766b56a5d0adac7e5e4c9204fea",
    "signature": "0x74e4662338969d8bcd52813e0f8181ecbdd7331acd0c04c7f3fa844f44e2f33a4ebccdf8d63c67908a516d88939a7e796e4cb499068eb8a352f8b227ed3c77491b",
    "signer": "0x93C6d4aBa35e02A26aB5910bfF4ac17B56906f3F",
    "userId": "784627180"
  }
}